src/users.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $Core: libIRCDusers */
  15
  16 #include "inspircd.h"
  17 #include <stdarg.h>
  18 #include "socketengine.h"
  19 #include "wildcard.h"
  20 #include "xline.h"
  21 #include "bancache.h"
  22 #include "commands/cmd_whowas.h"
  23
  24 /* XXX: Used for speeding up WriteCommon operations */
  25 unsigned long uniq_id = 1;
  26
  27 static unsigned long* already_sent = NULL;
  28
  29
  30 void InitializeAlreadySent(SocketEngine* SE)
  31 {
  32         already_sent = new unsigned long[SE->GetMaxFds()];
  33         memset(already_sent, 0, SE->GetMaxFds() * sizeof(unsigned long));
  34 }
  35
  36
  37 std::string User::ProcessNoticeMasks(const char *sm)
  38 {
  39         bool adding = true, oldadding = false;
  40         const char *c = sm;
  41         std::string output;
  42
  43         while (c && *c)
  44         {
  45                 switch (*c)
  46                 {
  47                         case '+':
  48                                 adding = true;
  49                         break;
  50                         case '-':
  51                                 adding = false;
  52                         break;
  53                         case '*':
  54                                 for (unsigned char d = 'A'; d <= 'z'; d++)
  55                                 {
  56                                         if (ServerInstance->SNO->IsEnabled(d))
  57                                         {
  58                                                 if ((!IsNoticeMaskSet(d) && adding) || (IsNoticeMaskSet(d) && !adding))
  59                                                 {
  60                                                         if ((oldadding != adding) || (!output.length()))
  61                                                                 output += (adding ? '+' : '-');
  62
  63                                                         this->SetNoticeMask(d, adding);
  64
  65                                                         output += d;
  66                                                 }
  67                                         }
  68                                         oldadding = adding;
  69                                 }
  70                         break;
  71                         default:
  72                                 if ((*c >= 'A') && (*c <= 'z') && (ServerInstance->SNO->IsEnabled(*c)))
  73                                 {
  74                                         if ((!IsNoticeMaskSet(*c) && adding) || (IsNoticeMaskSet(*c) && !adding))
  75                                         {
  76                                                 if ((oldadding != adding) || (!output.length()))
  77                                                         output += (adding ? '+' : '-');
  78
  79                                                 this->SetNoticeMask(*c, adding);
  80
  81                                                 output += *c;
  82                                         }
  83                                 }
  84                                 else
  85                                         this->WriteNumeric(501, "%s %c :is unknown snomask char to me", this->nick, *c);
  86
  87                                 oldadding = adding;
  88                         break;
  89                 }
  90
  91                 *c++;
  92         }
  93
  94         return output;
  95 }
  96
  97 void User::StartDNSLookup()
  98 {
  99         try
 100         {
 101                 bool cached;
 102                 const char* sip = this->GetIPString(false);
 103
 104                 /* Special case for 4in6 (Have i mentioned i HATE 4in6?) */
 105                 if (!strncmp(sip, "0::ffff:", 8))
 106                         res_reverse = new UserResolver(this->ServerInstance, this, sip + 8, DNS_QUERY_PTR4, cached);
 107                 else
 108                         res_reverse = new UserResolver(this->ServerInstance, this, sip, this->GetProtocolFamily() == AF_INET ? DNS_QUERY_PTR4 : DNS_QUERY_PTR6, cached);
 109
 110                 this->ServerInstance->AddResolver(res_reverse, cached);
 111         }
 112         catch (CoreException& e)
 113         {
 114                 ServerInstance->Logs->Log("USERS", DEBUG,"Error in resolver: %s",e.GetReason());
 115         }
 116 }
 117
 118 bool User::IsNoticeMaskSet(unsigned char sm)
 119 {
 120         return (snomasks[sm-65]);
 121 }
 122
 123 void User::SetNoticeMask(unsigned char sm, bool value)
 124 {
 125         snomasks[sm-65] = value;
 126 }
 127
 128 const char* User::FormatNoticeMasks()
 129 {
 130         static char data[MAXBUF];
 131         int offset = 0;
 132
 133         for (int n = 0; n < 64; n++)
 134         {
 135                 if (snomasks[n])
 136                         data[offset++] = n+65;
 137         }
 138
 139         data[offset] = 0;
 140         return data;
 141 }
 142
 143
 144
 145 bool User::IsModeSet(unsigned char m)
 146 {
 147         return (modes[m-65]);
 148 }
 149
 150 void User::SetMode(unsigned char m, bool value)
 151 {
 152         modes[m-65] = value;
 153 }
 154
 155 const char* User::FormatModes()
 156 {
 157         static char data[MAXBUF];
 158         int offset = 0;
 159         for (int n = 0; n < 64; n++)
 160         {
 161                 if (modes[n])
 162                         data[offset++] = n+65;
 163         }
 164         data[offset] = 0;
 165         return data;
 166 }
 167
 168 void User::DecrementModes()
 169 {
 170         ServerInstance->Logs->Log("USERS", DEBUG, "DecrementModes()");
 171         for (unsigned char n = 'A'; n <= 'z'; n++)
 172         {
 173                 if (modes[n-65])
 174                 {
 175                         ServerInstance->Logs->Log("USERS", DEBUG,"DecrementModes() found mode %c", n);
 176                         ModeHandler* mh = ServerInstance->Modes->FindMode(n, MODETYPE_USER);
 177                         if (mh)
 178                         {
 179                                 ServerInstance->Logs->Log("USERS", DEBUG,"Found handler %c and call ChangeCount", n);
 180                                 mh->ChangeCount(-1);
 181                         }
 182                 }
 183         }
 184 }
 185
 186 User::User(InspIRCd* Instance, const std::string &uid) : ServerInstance(Instance)
 187 {
 188         *password = *nick = *ident = *host = *dhost = *fullname = *awaymsg = *oper = *uuid = 0;
 189         server = (char*)Instance->FindServerNamePtr(Instance->Config->ServerName);
 190         reset_due = ServerInstance->Time();
 191         age = ServerInstance->Time();
 192         Penalty = 0;
 193         lines_in = lastping = signon = idle_lastmsg = nping = registered = 0;
 194         ChannelCount = timeout = bytes_in = bytes_out = cmds_in = cmds_out = 0;
 195         quietquit = OverPenalty = ExemptFromPenalty = quitting = exempt = haspassed = dns_done = false;
 196         fd = -1;
 197         recvq.clear();
 198         sendq.clear();
 199         WriteError.clear();
 200         res_forward = res_reverse = NULL;
 201         Visibility = NULL;
 202         ip = NULL;
 203         MyClass = NULL;
 204         io = NULL;
 205         AllowedUserModes = NULL;
 206         AllowedChanModes = NULL;
 207         AllowedOperCommands = NULL;
 208         chans.clear();
 209         invites.clear();
 210         memset(modes,0,sizeof(modes));
 211         memset(snomasks,0,sizeof(snomasks));
 212         /* Invalidate cache */
 213         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
 214
 215         if (uid.empty())
 216                 strlcpy(uuid, Instance->GetUID().c_str(), UUID_LENGTH);
 217         else
 218                 strlcpy(uuid, uid.c_str(), UUID_LENGTH);
 219
 220         ServerInstance->Logs->Log("USERS", DEBUG,"New UUID for user: %s (%s)", uuid, uid.empty() ? "allocated new" : "used remote");
 221
 222         user_hash::iterator finduuid = Instance->Users->uuidlist->find(uuid);
 223         if (finduuid == Instance->Users->uuidlist->end())
 224                 (*Instance->Users->uuidlist)[uuid] = this;
 225         else
 226                 throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
 227 }
 228
 229 User::~User()
 230 {
 231         /* NULL for remote users :) */
 232         if (this->MyClass)
 233         {
 234                 this->MyClass->RefCount--;
 235                 ServerInstance->Logs->Log("USERS", DEBUG, "User destructor -- connect refcount now: %lu", this->MyClass->RefCount);
 236         }
 237         if (this->AllowedOperCommands)
 238         {
 239                 delete AllowedOperCommands;
 240                 AllowedOperCommands = NULL;
 241         }
 242
 243         if (this->AllowedUserModes)
 244         {
 245                 delete[] AllowedUserModes;
 246                 AllowedUserModes = NULL;
 247         }
 248
 249         if (this->AllowedChanModes)
 250         {
 251                 delete[] AllowedChanModes;
 252                 AllowedChanModes = NULL;
 253         }
 254
 255         this->InvalidateCache();
 256         this->DecrementModes();
 257
 258         if (ip)
 259         {
 260                 ServerInstance->Users->RemoveCloneCounts(this);
 261
 262                 if (this->GetProtocolFamily() == AF_INET)
 263                 {
 264                         delete (sockaddr_in*)ip;
 265                 }
 266 #ifdef SUPPORT_IP6LINKS
 267                 else
 268                 {
 269                         delete (sockaddr_in6*)ip;
 270                 }
 271 #endif
 272         }
 273
 274         ServerInstance->Users->uuidlist->erase(uuid);
 275 }
 276
 277 char* User::MakeHost()
 278 {
 279         if (this->cached_makehost)
 280                 return this->cached_makehost;
 281
 282         char nhost[MAXBUF];
 283         /* This is much faster than snprintf */
 284         char* t = nhost;
 285         for(char* n = ident; *n; n++)
 286                 *t++ = *n;
 287         *t++ = '@';
 288         for(char* n = host; *n; n++)
 289                 *t++ = *n;
 290         *t = 0;
 291
 292         this->cached_makehost = strdup(nhost);
 293
 294         return this->cached_makehost;
 295 }
 296
 297 char* User::MakeHostIP()
 298 {
 299         if (this->cached_hostip)
 300                 return this->cached_hostip;
 301
 302         char ihost[MAXBUF];
 303         /* This is much faster than snprintf */
 304         char* t = ihost;
 305         for(char* n = ident; *n; n++)
 306                 *t++ = *n;
 307         *t++ = '@';
 308         for(const char* n = this->GetIPString(); *n; n++)
 309                 *t++ = *n;
 310         *t = 0;
 311
 312         this->cached_hostip = strdup(ihost);
 313
 314         return this->cached_hostip;
 315 }
 316
 317 void User::CloseSocket()
 318 {
 319         if (this->fd > -1)
 320         {
 321                 ServerInstance->SE->Shutdown(this, 2);
 322                 ServerInstance->SE->Close(this);
 323         }
 324 }
 325
 326 char* User::GetFullHost()
 327 {
 328         if (this->cached_fullhost)
 329                 return this->cached_fullhost;
 330
 331         char result[MAXBUF];
 332         char* t = result;
 333         for(char* n = nick; *n; n++)
 334                 *t++ = *n;
 335         *t++ = '!';
 336         for(char* n = ident; *n; n++)
 337                 *t++ = *n;
 338         *t++ = '@';
 339         for(char* n = dhost; *n; n++)
 340                 *t++ = *n;
 341         *t = 0;
 342
 343         this->cached_fullhost = strdup(result);
 344
 345         return this->cached_fullhost;
 346 }
 347
 348 char* User::MakeWildHost()
 349 {
 350         static char nresult[MAXBUF];
 351         char* t = nresult;
 352         *t++ = '*';     *t++ = '!';
 353         *t++ = '*';     *t++ = '@';
 354         for(char* n = dhost; *n; n++)
 355                 *t++ = *n;
 356         *t = 0;
 357         return nresult;
 358 }
 359
 360 int User::ReadData(void* buffer, size_t size)
 361 {
 362         if (IS_LOCAL(this))
 363         {
 364 #ifndef WIN32
 365                 return read(this->fd, buffer, size);
 366 #else
 367                 return recv(this->fd, (char*)buffer, size, 0);
 368 #endif
 369         }
 370         else
 371                 return 0;
 372 }
 373
 374
 375 char* User::GetFullRealHost()
 376 {
 377         if (this->cached_fullrealhost)
 378                 return this->cached_fullrealhost;
 379
 380         char fresult[MAXBUF];
 381         char* t = fresult;
 382         for(char* n = nick; *n; n++)
 383                 *t++ = *n;
 384         *t++ = '!';
 385         for(char* n = ident; *n; n++)
 386                 *t++ = *n;
 387         *t++ = '@';
 388         for(char* n = host; *n; n++)
 389                 *t++ = *n;
 390         *t = 0;
 391
 392         this->cached_fullrealhost = strdup(fresult);
 393
 394         return this->cached_fullrealhost;
 395 }
 396
 397 bool User::IsInvited(const irc::string &channel)
 398 {
 399         time_t now = time(NULL);
 400         InvitedList::iterator safei;
 401         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 402         {
 403                 if (channel == i->first)
 404                 {
 405                         if (i->second != 0 && now > i->second)
 406                         {
 407                                 /* Expired invite, remove it. */
 408                                 safei = i;
 409                                 --i;
 410                                 invites.erase(safei);
 411                                 continue;
 412                         }
 413                         return true;
 414                 }
 415         }
 416         return false;
 417 }
 418
 419 InvitedList* User::GetInviteList()
 420 {
 421         time_t now = time(NULL);
 422         /* Weed out expired invites here. */
 423         InvitedList::iterator safei;
 424         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 425         {
 426                 if (i->second != 0 && now > i->second)
 427                 {
 428                         /* Expired invite, remove it. */
 429                         safei = i;
 430                         --i;
 431                         invites.erase(safei);
 432                 }
 433         }
 434         return &invites;
 435 }
 436
 437 void User::InviteTo(const irc::string &channel, time_t invtimeout)
 438 {
 439         time_t now = time(NULL);
 440         if (invtimeout != 0 && now > invtimeout) return; /* Don't add invites that are expired from the get-go. */
 441         for (InvitedList::iterator i = invites.begin(); i != invites.end(); ++i)
 442         {
 443                 if (channel == i->first)
 444                 {
 445                         if (i->second != 0 && invtimeout > i->second)
 446                         {
 447                                 i->second = invtimeout;
 448                         }
 449                 }
 450         }
 451         invites.push_back(std::make_pair(channel, invtimeout));
 452 }
 453
 454 void User::RemoveInvite(const irc::string &channel)
 455 {
 456         for (InvitedList::iterator i = invites.begin(); i != invites.end(); i++)
 457         {
 458                 if (channel == i->first)
 459                 {
 460                         invites.erase(i);
 461                         return;
 462                 }
 463         }
 464 }
 465
 466 bool User::HasModePermission(unsigned char mode, ModeType type)
 467 {
 468         if (!IS_LOCAL(this))
 469                 return true;
 470
 471         if (!IS_OPER(this))
 472                 return false;
 473
 474         if (!AllowedUserModes || !AllowedChanModes)
 475                 return false;
 476
 477         return ((type == MODETYPE_USER ? AllowedUserModes : AllowedChanModes))[(mode - 'A')];
 478
 479 }
 480
 481 bool User::HasPermission(const std::string &command)
 482 {
 483         /*
 484          * users on remote servers can completely bypass all permissions based checks.
 485          * This prevents desyncs when one server has different type/class tags to another.
 486          * That having been said, this does open things up to the possibility of source changes
 487          * allowing remote kills, etc - but if they have access to the src, they most likely have
 488          * access to the conf - so it's an end to a means either way.
 489          */
 490         if (!IS_LOCAL(this))
 491                 return true;
 492
 493         // are they even an oper at all?
 494         if (!IS_OPER(this))
 495         {
 496                 return false;
 497         }
 498
 499         if (!AllowedOperCommands)
 500                 return false;
 501
 502         if (AllowedOperCommands->find(command) != AllowedOperCommands->end())
 503                 return true;
 504         else if (AllowedOperCommands->find("*") != AllowedOperCommands->end())
 505                 return true;
 506
 507         return false;
 508 }
 509
 510 bool User::AddBuffer(const std::string &a)
 511 {
 512         std::string::size_type start = 0;
 513         std::string::size_type i = a.find('\r');
 514
 515         /*
 516          * The old implementation here took a copy, and rfind() on \r, removing as it found them, before
 517          * copying a second time onto the recvq. That's ok, but involves three copies minimum (recv() to buffer,
 518          * buffer to here, here to recvq) - The new method now copies twice (recv() to buffer, buffer to recvq).
 519          *
 520          * We use find() instead of rfind() for clarity, however unlike the old code, our scanning of the string is
 521          * contiguous: as we specify a startpoint, we never see characters we have scanned previously, making this
 522          * marginally faster in cases with a number of \r hidden early on in the buffer.
 523          *
 524          * How it works:
 525          * Start at first pos of string, find first \r, append everything in the chunk (excluding \r) to recvq. Set
 526          * i ahead of the \r, search for next \r, add next chunk to buffer... repeat.
 527          *              -- w00t (7 may, 2008)
 528          */
 529         if (i == std::string::npos)
 530         {
 531                 // no \r that we need to dance around, just add to buffer
 532                 recvq.append(a);
 533         }
 534         else
 535         {
 536                 // While we can find the end of a chunk to add
 537                 while (i != std::string::npos)
 538                 {
 539                         // Append the chunk that we have
 540                         recvq.append(a, start, (i - start));
 541
 542                         // Start looking for the next one
 543                         start = i + 1;
 544                         i = a.find('\r', start);
 545                 }
 546
 547                 if (start != a.length())
 548                 {
 549                         /*
 550                          * This is here to catch a corner case when we get something like:
 551                          * NICK w0
 552                          * 0t\r\nU
 553                          * SER ...
 554                          * in successive calls to us.
 555                          *
 556                          * Without this conditional, the 'U' on the second case will be dropped,
 557                          * which is most *certainly* not the behaviour we want!
 558                          *              -- w00t
 559                          */
 560                         recvq.append(a, start, (a.length() - start));
 561                 }
 562         }
 563
 564         if (this->MyClass && (recvq.length() > this->MyClass->GetRecvqMax()))
 565         {
 566                 this->SetWriteError("RecvQ exceeded");
 567                 ServerInstance->SNO->WriteToSnoMask('A', "User %s RecvQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)recvq.length(),this->MyClass->GetRecvqMax());
 568                 return false;
 569         }
 570
 571         return true;
 572 }
 573
 574 bool User::BufferIsReady()
 575 {
 576         return (recvq.find('\n') != std::string::npos);
 577 }
 578
 579 void User::ClearBuffer()
 580 {
 581         recvq.clear();
 582 }
 583
 584 std::string User::GetBuffer()
 585 {
 586         try
 587         {
 588                 if (recvq.empty())
 589                         return "";
 590
 591                 /* Strip any leading \r or \n off the string.
 592                  * Usually there are only one or two of these,
 593                  * so its is computationally cheap to do.
 594                  */
 595                 std::string::iterator t = recvq.begin();
 596                 while (t != recvq.end() && (*t == '\r' || *t == '\n'))
 597                 {
 598                         recvq.erase(t);
 599                         t = recvq.begin();
 600                 }
 601
 602                 for (std::string::iterator x = recvq.begin(); x != recvq.end(); x++)
 603                 {
 604                         /* Find the first complete line, return it as the
 605                          * result, and leave the recvq as whats left
 606                          */
 607                         if (*x == '\n')
 608                         {
 609                                 std::string ret = std::string(recvq.begin(), x);
 610                                 recvq.erase(recvq.begin(), x + 1);
 611                                 return ret;
 612                         }
 613                 }
 614                 return "";
 615         }
 616
 617         catch (...)
 618         {
 619                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::GetBuffer()");
 620                 return "";
 621         }
 622 }
 623
 624 void User::AddWriteBuf(const std::string &data)
 625 {
 626         if (*this->GetWriteError())
 627                 return;
 628
 629         if (this->MyClass && (sendq.length() + data.length() > this->MyClass->GetSendqMax()))
 630         {
 631                 /*
 632                  * Fix by brain - Set the error text BEFORE calling, because
 633                  * if we dont it'll recursively  call here over and over again trying
 634                  * to repeatedly add the text to the sendq!
 635                  */
 636                 this->SetWriteError("SendQ exceeded");
 637                 ServerInstance->SNO->WriteToSnoMask('A', "User %s SendQ of %lu exceeds connect class maximum of %lu",this->nick,(unsigned long int)sendq.length() + data.length(),this->MyClass->GetSendqMax());
 638                 return;
 639         }
 640
 641         if (data.length() > MAXBUF - 2) /* MAXBUF has a value of 514, to account for line terminators */
 642                 sendq.append(data.substr(0,MAXBUF - 4)).append("\r\n"); /* MAXBUF-4 = 510 */
 643         else
 644                 sendq.append(data);
 645 }
 646
 647 // send AS MUCH OF THE USERS SENDQ as we are able to (might not be all of it)
 648 void User::FlushWriteBuf()
 649 {
 650         try
 651         {
 652                 if ((this->fd == FD_MAGIC_NUMBER) || (*this->GetWriteError()))
 653                 {
 654                         sendq.clear();
 655                 }
 656                 if ((sendq.length()) && (this->fd != FD_MAGIC_NUMBER))
 657                 {
 658                         int old_sendq_length = sendq.length();
 659                         int n_sent = ServerInstance->SE->Send(this, this->sendq.data(), this->sendq.length(), 0);
 660
 661                         if (n_sent == -1)
 662                         {
 663                                 if (errno == EAGAIN)
 664                                 {
 665                                         /* The socket buffer is full. This isnt fatal,
 666                                          * try again later.
 667                                          */
 668                                         this->ServerInstance->SE->WantWrite(this);
 669                                 }
 670                                 else
 671                                 {
 672                                         /* Fatal error, set write error and bail
 673                                          */
 674                                         this->SetWriteError(errno ? strerror(errno) : "EOF from client");
 675                                         return;
 676                                 }
 677                         }
 678                         else
 679                         {
 680                                 /* advance the queue */
 681                                 if (n_sent)
 682                                         this->sendq = this->sendq.substr(n_sent);
 683                                 /* update the user's stats counters */
 684                                 this->bytes_out += n_sent;
 685                                 this->cmds_out++;
 686                                 if (n_sent != old_sendq_length)
 687                                         this->ServerInstance->SE->WantWrite(this);
 688                         }
 689                 }
 690         }
 691
 692         catch (...)
 693         {
 694                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::FlushWriteBuf()");
 695         }
 696
 697         if (this->sendq.empty())
 698         {
 699                 FOREACH_MOD(I_OnBufferFlushed,OnBufferFlushed(this));
 700         }
 701 }
 702
 703 void User::SetWriteError(const std::string &error)
 704 {
 705         // don't try to set the error twice, its already set take the first string.
 706         if (this->WriteError.empty())
 707                 this->WriteError = error;
 708 }
 709
 710 const char* User::GetWriteError()
 711 {
 712         return this->WriteError.c_str();
 713 }
 714
 715 void User::Oper(const std::string &opertype, const std::string &opername)
 716 {
 717         char* mycmd;
 718         char* savept;
 719         char* savept2;
 720
 721         try
 722         {
 723                 this->modes[UM_OPERATOR] = 1;
 724                 this->WriteServ("MODE %s :+o", this->nick);
 725                 FOREACH_MOD(I_OnOper, OnOper(this, opertype));
 726                 ServerInstance->Logs->Log("OPER", DEFAULT, "%s!%s@%s opered as type: %s", this->nick, this->ident, this->host, opertype.c_str());
 727                 strlcpy(this->oper, opertype.c_str(), NICKMAX - 1);
 728                 ServerInstance->Users->all_opers.push_back(this);
 729
 730                 opertype_t::iterator iter_opertype = ServerInstance->Config->opertypes.find(this->oper);
 731                 if (iter_opertype != ServerInstance->Config->opertypes.end())
 732                 {
 733
 734                         if (AllowedOperCommands)
 735                                 AllowedOperCommands->clear();
 736                         else
 737                                 AllowedOperCommands = new std::map<std::string, bool>;
 738
 739                         if (!AllowedChanModes)
 740                                 AllowedChanModes = new bool[64];
 741
 742                         if (!AllowedUserModes)
 743                                 AllowedUserModes = new bool[64];
 744
 745                         memset(AllowedUserModes, 0, 64);
 746                         memset(AllowedChanModes, 0, 64);
 747
 748                         char* Classes = strdup(iter_opertype->second);
 749                         char* myclass = strtok_r(Classes," ",&savept);
 750                         while (myclass)
 751                         {
 752                                 operclass_t::iterator iter_operclass = ServerInstance->Config->operclass.find(myclass);
 753                                 if (iter_operclass != ServerInstance->Config->operclass.end())
 754                                 {
 755                                         char* CommandList = strdup(iter_operclass->second.commandlist);
 756                                         mycmd = strtok_r(CommandList," ",&savept2);
 757                                         while (mycmd)
 758                                         {
 759                                                 this->AllowedOperCommands->insert(std::make_pair(mycmd, true));
 760                                                 mycmd = strtok_r(NULL," ",&savept2);
 761                                         }
 762                                         free(CommandList);
 763                                         this->AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
 764                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.umodelist; *c; ++c)
 765                                         {
 766                                                 if (*c == '*')
 767                                                 {
 768                                                         memset(this->AllowedUserModes, (int)(true), 64);
 769                                                 }
 770                                                 else
 771                                                 {
 772                                                         this->AllowedUserModes[*c - 'A'] = true;
 773                                                 }
 774                                         }
 775                                         for (unsigned char* c = (unsigned char*)iter_operclass->second.cmodelist; *c; ++c)
 776                                         {
 777                                                 if (*c == '*')
 778                                                 {
 779                                                         memset(this->AllowedChanModes, (int)(true), 64);
 780                                                 }
 781                                                 else
 782                                                 {
 783                                                         this->AllowedChanModes[*c - 'A'] = true;
 784                                                 }
 785                                         }
 786                                 }
 787                                 myclass = strtok_r(NULL," ",&savept);
 788                         }
 789                         free(Classes);
 790                 }
 791
 792                 FOREACH_MOD(I_OnPostOper,OnPostOper(this, opertype, opername));
 793         }
 794
 795         catch (...)
 796         {
 797                 ServerInstance->Logs->Log("OPER", DEBUG,"Exception in User::Oper()");
 798         }
 799 }
 800
 801 void User::UnOper()
 802 {
 803         if (IS_OPER(this))
 804         {
 805                 /* Remove all oper only modes from the user when the deoper - Bug #466*/
 806                 std::string moderemove("-");
 807
 808                 for (unsigned char letter = 'A'; letter <= 'z'; letter++)
 809                 {
 810                         if (letter != 'o')
 811                         {
 812                                 ModeHandler* mh = ServerInstance->Modes->FindMode(letter, MODETYPE_USER);
 813                                 if (mh && mh->NeedsOper())
 814                                         moderemove += letter;
 815                         }
 816                 }
 817
 818                 std::vector<std::string> parameters;
 819                 parameters.push_back(this->nick);
 820                 parameters.push_back(moderemove);
 821
 822                 ServerInstance->Parser->CallHandler("MODE", parameters, this);
 823
 824                 /* unset their oper type (what IS_OPER checks), and remove +o */
 825                 *this->oper = 0;
 826                 this->modes[UM_OPERATOR] = 0;
 827
 828                 /* remove the user from the oper list. Will remove multiple entries as a safeguard against bug #404 */
 829                 ServerInstance->Users->all_opers.remove(this);
 830
 831                 if (AllowedOperCommands)
 832                 {
 833                         delete AllowedOperCommands;
 834                         AllowedOperCommands = NULL;
 835                 }
 836                 if (AllowedUserModes)
 837                 {
 838                         delete[] AllowedUserModes;
 839                         AllowedUserModes = NULL;
 840                 }
 841                 if (AllowedChanModes)
 842                 {
 843                         delete[] AllowedChanModes;
 844                         AllowedChanModes = NULL;
 845                 }
 846
 847         }
 848 }
 849
 850 /* adds or updates an entry in the whowas list */
 851 void User::AddToWhoWas()
 852 {
 853         Command* whowas_command = ServerInstance->Parser->GetHandler("WHOWAS");
 854         if (whowas_command)
 855         {
 856                 std::deque<classbase*> params;
 857                 params.push_back(this);
 858                 whowas_command->HandleInternal(WHOWAS_ADD, params);
 859         }
 860 }
 861
 862 /*
 863  * Check class restrictions
 864  */
 865 void User::CheckClass()
 866 {
 867         ConnectClass* a = this->MyClass;
 868
 869         if ((!a) || (a->GetType() == CC_DENY))
 870         {
 871                 ServerInstance->Users->QuitUser(this, "Unauthorised connection");
 872                 return;
 873         }
 874         else if ((a->GetMaxLocal()) && (ServerInstance->Users->LocalCloneCount(this) > a->GetMaxLocal()))
 875         {
 876                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (local)");
 877                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum LOCAL connections (%ld) exceeded for IP %s", a->GetMaxLocal(), this->GetIPString());
 878                 return;
 879         }
 880         else if ((a->GetMaxGlobal()) && (ServerInstance->Users->GlobalCloneCount(this) > a->GetMaxGlobal()))
 881         {
 882                 ServerInstance->Users->QuitUser(this, "No more connections allowed from your host via this connect class (global)");
 883                 ServerInstance->SNO->WriteToSnoMask('A', "WARNING: maximum GLOBAL connections (%ld) exceeded for IP %s", a->GetMaxGlobal(), this->GetIPString());
 884                 return;
 885         }
 886
 887         this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
 888         this->timeout = ServerInstance->Time() + a->GetRegTimeout();
 889         this->MaxChans = a->GetMaxChans();
 890 }
 891
 892 void User::CheckLines()
 893 {
 894         const char* check[] = { "G" , "K", NULL };
 895
 896         if (!this->exempt)
 897         {
 898                 for (int n = 0; check[n]; ++n)
 899                 {
 900                         XLine *r = ServerInstance->XLines->MatchesLine(check[n], this);
 901
 902                         if (r)
 903                         {
 904                                 r->Apply(this);
 905                                 return;
 906                         }
 907                 }
 908         }
 909 }
 910
 911 void User::FullConnect()
 912 {
 913         ServerInstance->stats->statsConnects++;
 914         this->idle_lastmsg = ServerInstance->Time();
 915
 916         /*
 917          * You may be thinking "wtf, we checked this in User::AddClient!" - and yes, we did, BUT.
 918          * At the time AddClient is called, we don't have a resolved host, by here we probably do - which
 919          * may put the user into a totally seperate class with different restrictions! so we *must* check again.
 920          * Don't remove this! -- w00t
 921          */
 922         this->SetClass();
 923
 924         /* Check the password, if one is required by the user's connect class.
 925          * This CANNOT be in CheckClass(), because that is called prior to PASS as well!
 926          */
 927         if (this->MyClass && !this->MyClass->GetPass().empty() && !this->haspassed)
 928         {
 929                 ServerInstance->Users->QuitUser(this, "Invalid password");
 930                 return;
 931         }
 932
 933         CheckLines();
 934
 935         this->WriteServ("NOTICE Auth :Welcome to \002%s\002!",ServerInstance->Config->Network);
 936         this->WriteNumeric(001, "%s :Welcome to the %s IRC Network %s!%s@%s",this->nick, ServerInstance->Config->Network, this->nick, this->ident, this->host);
 937         this->WriteNumeric(002, "%s :Your host is %s, running version InspIRCd-1.2",this->nick,ServerInstance->Config->ServerName);
 938         this->WriteNumeric(003, "%s :This server was created %s %s", this->nick, __TIME__, __DATE__);
 939         this->WriteNumeric(004, "%s %s InspIRCd-1.2 %s %s %s", this->nick, ServerInstance->Config->ServerName, ServerInstance->Modes->UserModeList().c_str(), ServerInstance->Modes->ChannelModeList().c_str(), ServerInstance->Modes->ParaModeList().c_str());
 940
 941         ServerInstance->Config->Send005(this);
 942         this->WriteNumeric(42, "%s %s :your unique ID", this->nick, this->uuid);
 943
 944
 945         this->ShowMOTD();
 946
 947         /* Now registered */
 948         if (ServerInstance->Users->unregistered_count)
 949                 ServerInstance->Users->unregistered_count--;
 950
 951         /* Trigger LUSERS output, give modules a chance too */
 952         int MOD_RESULT = 0;
 953         FOREACH_RESULT(I_OnPreCommand, OnPreCommand("LUSERS", std::vector<std::string>(), this, true, "LUSERS"));
 954         if (!MOD_RESULT)
 955                 ServerInstance->CallCommandHandler("LUSERS", std::vector<std::string>(), this);
 956
 957         /*
 958          * We don't set REG_ALL until triggering OnUserConnect, so some module events don't spew out stuff
 959          * for a user that doesn't exist yet.
 960          */
 961         FOREACH_MOD(I_OnUserConnect,OnUserConnect(this));
 962
 963         this->registered = REG_ALL;
 964
 965         FOREACH_MOD(I_OnPostConnect,OnPostConnect(this));
 966
 967         ServerInstance->SNO->WriteToSnoMask('c',"Client connecting on port %d: %s!%s@%s [%s] [%s]", this->GetPort(), this->nick, this->ident, this->host, this->GetIPString(), this->fullname);
 968         ServerInstance->Logs->Log("BANCACHE", DEBUG, "BanCache: Adding NEGATIVE hit for %s", this->GetIPString());
 969         ServerInstance->BanCache->AddHit(this->GetIPString(), "", "");
 970 }
 971
 972 /** User::UpdateNick()
 973  * re-allocates a nick in the user_hash after they change nicknames,
 974  * returns a pointer to the new user as it may have moved
 975  */
 976 User* User::UpdateNickHash(const char* New)
 977 {
 978         //user_hash::iterator newnick;
 979         user_hash::iterator oldnick = ServerInstance->Users->clientlist->find(this->nick);
 980
 981         if (!strcasecmp(this->nick,New))
 982                 return oldnick->second;
 983
 984         if (oldnick == ServerInstance->Users->clientlist->end())
 985                 return NULL; /* doesnt exist */
 986
 987         User* olduser = oldnick->second;
 988         (*(ServerInstance->Users->clientlist))[New] = olduser;
 989         ServerInstance->Users->clientlist->erase(oldnick);
 990         return olduser;
 991 }
 992
 993 void User::InvalidateCache()
 994 {
 995         /* Invalidate cache */
 996         if (cached_fullhost)
 997                 free(cached_fullhost);
 998         if (cached_hostip)
 999                 free(cached_hostip);
1000         if (cached_makehost)
1001                 free(cached_makehost);
1002         if (cached_fullrealhost)
1003                 free(cached_fullrealhost);
1004         cached_fullhost = cached_hostip = cached_makehost = cached_fullrealhost = NULL;
1005 }
1006
1007 bool User::ForceNickChange(const char* newnick)
1008 {
1009         int MOD_RESULT = 0;
1010
1011         this->InvalidateCache();
1012
1013         FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(this, newnick));
1014
1015         if (MOD_RESULT)
1016         {
1017                 ServerInstance->stats->statsCollisions++;
1018                 return false;
1019         }
1020
1021         std::deque<classbase*> dummy;
1022         Command* nickhandler = ServerInstance->Parser->GetHandler("NICK");
1023         if (nickhandler) // wtfbbq, when would this not be here
1024         {
1025                 std::vector<std::string> parameters;
1026                 nickhandler->HandleInternal(1, dummy);
1027                 parameters.push_back(newnick);
1028                 bool result = (ServerInstance->Parser->CallHandler("NICK", parameters, this) == CMD_SUCCESS);
1029                 nickhandler->HandleInternal(0, dummy);
1030                 return result;
1031         }
1032
1033         // Unreachable, we hope
1034         return false;
1035 }
1036
1037 void User::SetSockAddr(int protocol_family, const char* sip, int port)
1038 {
1039         this->cachedip = "";
1040
1041         switch (protocol_family)
1042         {
1043 #ifdef SUPPORT_IP6LINKS
1044                 case AF_INET6:
1045                 {
1046                         sockaddr_in6* sin = new sockaddr_in6;
1047                         sin->sin6_family = AF_INET6;
1048                         sin->sin6_port = port;
1049                         inet_pton(AF_INET6, sip, &sin->sin6_addr);
1050                         this->ip = (sockaddr*)sin;
1051                 }
1052                 break;
1053 #endif
1054                 case AF_INET:
1055                 {
1056                         sockaddr_in* sin = new sockaddr_in;
1057                         sin->sin_family = AF_INET;
1058                         sin->sin_port = port;
1059                         inet_pton(AF_INET, sip, &sin->sin_addr);
1060                         this->ip = (sockaddr*)sin;
1061                 }
1062                 break;
1063                 default:
1064                         ServerInstance->Logs->Log("USERS",DEBUG,"Uh oh, I dont know protocol %d to be set on '%s'!", protocol_family, this->nick);
1065                 break;
1066         }
1067 }
1068
1069 int User::GetPort()
1070 {
1071         if (this->ip == NULL)
1072                 return 0;
1073
1074         switch (this->GetProtocolFamily())
1075         {
1076 #ifdef SUPPORT_IP6LINKS
1077                 case AF_INET6:
1078                 {
1079                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1080                         return sin->sin6_port;
1081                 }
1082                 break;
1083 #endif
1084                 case AF_INET:
1085                 {
1086                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1087                         return sin->sin_port;
1088                 }
1089                 break;
1090                 default:
1091                 break;
1092         }
1093         return 0;
1094 }
1095
1096 int User::GetProtocolFamily()
1097 {
1098         if (this->ip == NULL)
1099                 return 0;
1100
1101         sockaddr_in* sin = (sockaddr_in*)this->ip;
1102         return sin->sin_family;
1103 }
1104
1105 /*
1106  * XXX the duplication here is horrid..
1107  * do we really need two methods doing essentially the same thing?
1108  */
1109 const char* User::GetIPString(bool translate4in6)
1110 {
1111         static char buf[1024];
1112
1113         if (this->ip == NULL)
1114                 return "";
1115
1116         if (!this->cachedip.empty())
1117                 return this->cachedip.c_str();
1118
1119         switch (this->GetProtocolFamily())
1120         {
1121 #ifdef SUPPORT_IP6LINKS
1122                 case AF_INET6:
1123                 {
1124                         static char temp[1024];
1125
1126                         sockaddr_in6* sin = (sockaddr_in6*)this->ip;
1127                         inet_ntop(sin->sin6_family, &sin->sin6_addr, buf, sizeof(buf));
1128                         /* IP addresses starting with a : on irc are a Bad Thing (tm) */
1129                         if (*buf == ':')
1130                         {
1131                                 strlcpy(&temp[1], buf, sizeof(temp) - 1);
1132                                 *temp = '0';
1133                                 if (translate4in6 && !strncmp(temp, "0::ffff:", 8))
1134                                 {
1135                                         this->cachedip = temp + 8;
1136                                         return temp + 8;
1137                                 }
1138
1139                                 this->cachedip = temp;
1140                                 return temp;
1141                         }
1142
1143                         this->cachedip = buf;
1144                         return buf;
1145                 }
1146                 break;
1147 #endif
1148                 case AF_INET:
1149                 {
1150                         sockaddr_in* sin = (sockaddr_in*)this->ip;
1151                         inet_ntop(sin->sin_family, &sin->sin_addr, buf, sizeof(buf));
1152                         this->cachedip = buf;
1153                         return buf;
1154                 }
1155                 break;
1156                 default:
1157                 break;
1158         }
1159
1160         // Unreachable, probably
1161         return "";
1162 }
1163
1164 /** NOTE: We cannot pass a const reference to this method.
1165  * The string is changed by the workings of the method,
1166  * so that if we pass const ref, we end up copying it to
1167  * something we can change anyway. Makes sense to just let
1168  * the compiler do that copy for us.
1169  */
1170 void User::Write(std::string text)
1171 {
1172         if (!ServerInstance->SE->BoundsCheckFd(this))
1173                 return;
1174
1175         try
1176         {
1177                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"C[%d] O %s", this->GetFd(), text.c_str());
1178                 text.append("\r\n");
1179         }
1180         catch (...)
1181         {
1182                 ServerInstance->Logs->Log("USEROUTPUT", DEBUG,"Exception in User::Write() std::string::append");
1183                 return;
1184         }
1185
1186         if (this->io)
1187         {
1188                 /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to
1189                  * implement their own buffering mechanisms
1190                  */
1191                 try
1192                 {
1193                         this->io->OnRawSocketWrite(this->fd, text.data(), text.length());
1194                 }
1195                 catch (CoreException& modexcept)
1196                 {
1197                         ServerInstance->Logs->Log("USEROUTPUT", DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
1198                 }
1199         }
1200         else
1201         {
1202                 this->AddWriteBuf(text);
1203         }
1204         ServerInstance->stats->statsSent += text.length();
1205         this->ServerInstance->SE->WantWrite(this);
1206 }
1207
1208 /** Write()
1209  */
1210 void User::Write(const char *text, ...)
1211 {
1212         va_list argsPtr;
1213         char textbuffer[MAXBUF];
1214
1215         va_start(argsPtr, text);
1216         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1217         va_end(argsPtr);
1218
1219         this->Write(std::string(textbuffer));
1220 }
1221
1222 void User::WriteServ(const std::string& text)
1223 {
1224         char textbuffer[MAXBUF];
1225
1226         snprintf(textbuffer,MAXBUF,":%s %s",ServerInstance->Config->ServerName,text.c_str());
1227         this->Write(std::string(textbuffer));
1228 }
1229
1230 /** WriteServ()
1231  *  Same as Write(), except `text' is prefixed with `:server.name '.
1232  */
1233 void User::WriteServ(const char* text, ...)
1234 {
1235         va_list argsPtr;
1236         char textbuffer[MAXBUF];
1237
1238         va_start(argsPtr, text);
1239         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1240         va_end(argsPtr);
1241
1242         this->WriteServ(std::string(textbuffer));
1243 }
1244
1245
1246 void User::WriteNumeric(unsigned int numeric, const char* text, ...)
1247 {
1248         va_list argsPtr;
1249         char textbuffer[MAXBUF];
1250
1251         va_start(argsPtr, text);
1252         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1253         va_end(argsPtr);
1254
1255         this->WriteNumeric(numeric, std::string(textbuffer));
1256 }
1257
1258 void User::WriteNumeric(unsigned int numeric, const std::string &text)
1259 {
1260         char textbuffer[MAXBUF];
1261         int MOD_RESULT = 0;
1262
1263         FOREACH_RESULT(I_OnNumeric, OnNumeric(this, numeric, text));
1264
1265         if (MOD_RESULT)
1266                 return;
1267
1268         snprintf(textbuffer,MAXBUF,":%s %03u %s",ServerInstance->Config->ServerName, numeric, text.c_str());
1269         this->Write(std::string(textbuffer));
1270 }
1271
1272 void User::WriteFrom(User *user, const std::string &text)
1273 {
1274         char tb[MAXBUF];
1275
1276         snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),text.c_str());
1277
1278         this->Write(std::string(tb));
1279 }
1280
1281
1282 /* write text from an originating user to originating user */
1283
1284 void User::WriteFrom(User *user, const char* text, ...)
1285 {
1286         va_list argsPtr;
1287         char textbuffer[MAXBUF];
1288
1289         va_start(argsPtr, text);
1290         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1291         va_end(argsPtr);
1292
1293         this->WriteFrom(user, std::string(textbuffer));
1294 }
1295
1296
1297 /* write text to an destination user from a source user (e.g. user privmsg) */
1298
1299 void User::WriteTo(User *dest, const char *data, ...)
1300 {
1301         char textbuffer[MAXBUF];
1302         va_list argsPtr;
1303
1304         va_start(argsPtr, data);
1305         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
1306         va_end(argsPtr);
1307
1308         this->WriteTo(dest, std::string(textbuffer));
1309 }
1310
1311 void User::WriteTo(User *dest, const std::string &data)
1312 {
1313         dest->WriteFrom(this, data);
1314 }
1315
1316
1317 void User::WriteCommon(const char* text, ...)
1318 {
1319         char textbuffer[MAXBUF];
1320         va_list argsPtr;
1321
1322         if (this->registered != REG_ALL)
1323                 return;
1324
1325         va_start(argsPtr, text);
1326         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1327         va_end(argsPtr);
1328
1329         this->WriteCommon(std::string(textbuffer));
1330 }
1331
1332 void User::WriteCommon(const std::string &text)
1333 {
1334         bool sent_to_at_least_one = false;
1335         char tb[MAXBUF];
1336
1337         if (this->registered != REG_ALL)
1338                 return;
1339
1340         uniq_id++;
1341
1342         if (!already_sent)
1343                 InitializeAlreadySent(ServerInstance->SE);
1344
1345         /* We dont want to be doing this n times, just once */
1346         snprintf(tb,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1347         std::string out = tb;
1348
1349         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1350         {
1351                 CUList* ulist = v->first->GetUsers();
1352                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1353                 {
1354                         if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1355                         {
1356                                 already_sent[i->first->fd] = uniq_id;
1357                                 i->first->Write(out);
1358                                 sent_to_at_least_one = true;
1359                         }
1360                 }
1361         }
1362
1363         /*
1364          * if the user was not in any channels, no users will receive the text. Make sure the user
1365          * receives their OWN message for WriteCommon
1366          */
1367         if (!sent_to_at_least_one)
1368         {
1369                 this->Write(std::string(tb));
1370         }
1371 }
1372
1373
1374 /* write a formatted string to all users who share at least one common
1375  * channel, NOT including the source user e.g. for use in QUIT
1376  */
1377
1378 void User::WriteCommonExcept(const char* text, ...)
1379 {
1380         char textbuffer[MAXBUF];
1381         va_list argsPtr;
1382
1383         va_start(argsPtr, text);
1384         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1385         va_end(argsPtr);
1386
1387         this->WriteCommonExcept(std::string(textbuffer));
1388 }
1389
1390 void User::WriteCommonQuit(const std::string &normal_text, const std::string &oper_text)
1391 {
1392         char tb1[MAXBUF];
1393         char tb2[MAXBUF];
1394
1395         if (this->registered != REG_ALL)
1396                 return;
1397
1398         uniq_id++;
1399
1400         if (!already_sent)
1401                 InitializeAlreadySent(ServerInstance->SE);
1402
1403         snprintf(tb1,MAXBUF,":%s QUIT :%s",this->GetFullHost(),normal_text.c_str());
1404         snprintf(tb2,MAXBUF,":%s QUIT :%s",this->GetFullHost(),oper_text.c_str());
1405         std::string out1 = tb1;
1406         std::string out2 = tb2;
1407
1408         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1409         {
1410                 CUList *ulist = v->first->GetUsers();
1411                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1412                 {
1413                         if (this != i->first)
1414                         {
1415                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1416                                 {
1417                                         already_sent[i->first->fd] = uniq_id;
1418                                         i->first->Write(IS_OPER(i->first) ? out2 : out1);
1419                                 }
1420                         }
1421                 }
1422         }
1423 }
1424
1425 void User::WriteCommonExcept(const std::string &text)
1426 {
1427         char tb1[MAXBUF];
1428         std::string out1;
1429
1430         if (this->registered != REG_ALL)
1431                 return;
1432
1433         uniq_id++;
1434
1435         if (!already_sent)
1436                 InitializeAlreadySent(ServerInstance->SE);
1437
1438         snprintf(tb1,MAXBUF,":%s %s",this->GetFullHost(),text.c_str());
1439         out1 = tb1;
1440
1441         for (UCListIter v = this->chans.begin(); v != this->chans.end(); v++)
1442         {
1443                 CUList *ulist = v->first->GetUsers();
1444                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
1445                 {
1446                         if (this != i->first)
1447                         {
1448                                 if ((IS_LOCAL(i->first)) && (already_sent[i->first->fd] != uniq_id))
1449                                 {
1450                                         already_sent[i->first->fd] = uniq_id;
1451                                         i->first->Write(out1);
1452                                 }
1453                         }
1454                 }
1455         }
1456
1457 }
1458
1459 void User::WriteWallOps(const std::string &text)
1460 {
1461         if (!IS_LOCAL(this))
1462                 return;
1463
1464         std::string wallop("WALLOPS :");
1465         wallop.append(text);
1466
1467         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1468         {
1469                 User* t = *i;
1470                 if (t->IsModeSet('w'))
1471                         this->WriteTo(t,wallop);
1472         }
1473 }
1474
1475 void User::WriteWallOps(const char* text, ...)
1476 {
1477         if (!IS_LOCAL(this))
1478                 return;
1479
1480         char textbuffer[MAXBUF];
1481         va_list argsPtr;
1482
1483         va_start(argsPtr, text);
1484         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1485         va_end(argsPtr);
1486
1487         this->WriteWallOps(std::string(textbuffer));
1488 }
1489
1490 /* return 0 or 1 depending if users u and u2 share one or more common channels
1491  * (used by QUIT, NICK etc which arent channel specific notices)
1492  *
1493  * The old algorithm in 1.0 for this was relatively inefficient, iterating over
1494  * the first users channels then the second users channels within the outer loop,
1495  * therefore it was a maximum of x*y iterations (upon returning 0 and checking
1496  * all possible iterations). However this new function instead checks against the
1497  * channel's userlist in the inner loop which is a std::map<User*,User*>
1498  * and saves us time as we already know what pointer value we are after.
1499  * Don't quote me on the maths as i am not a mathematician or computer scientist,
1500  * but i believe this algorithm is now x+(log y) maximum iterations instead.
1501  */
1502 bool User::SharesChannelWith(User *other)
1503 {
1504         if ((!other) || (this->registered != REG_ALL) || (other->registered != REG_ALL))
1505                 return false;
1506
1507         /* Outer loop */
1508         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1509         {
1510                 /* Eliminate the inner loop (which used to be ~equal in size to the outer loop)
1511                  * by replacing it with a map::find which *should* be more efficient
1512                  */
1513                 if (i->first->HasUser(other))
1514                         return true;
1515         }
1516         return false;
1517 }
1518
1519 bool User::ChangeName(const char* gecos)
1520 {
1521         if (!strcmp(gecos, this->fullname))
1522                 return true;
1523
1524         if (IS_LOCAL(this))
1525         {
1526                 int MOD_RESULT = 0;
1527                 FOREACH_RESULT(I_OnChangeLocalUserGECOS,OnChangeLocalUserGECOS(this,gecos));
1528                 if (MOD_RESULT)
1529                         return false;
1530                 FOREACH_MOD(I_OnChangeName,OnChangeName(this,gecos));
1531         }
1532         strlcpy(this->fullname,gecos,MAXGECOS+1);
1533
1534         return true;
1535 }
1536
1537 bool User::ChangeDisplayedHost(const char* shost)
1538 {
1539         if (!strcmp(shost, this->dhost))
1540                 return true;
1541
1542         if (IS_LOCAL(this))
1543         {
1544                 int MOD_RESULT = 0;
1545                 FOREACH_RESULT(I_OnChangeLocalUserHost,OnChangeLocalUserHost(this,shost));
1546                 if (MOD_RESULT)
1547                         return false;
1548                 FOREACH_MOD(I_OnChangeHost,OnChangeHost(this,shost));
1549         }
1550
1551         if (this->ServerInstance->Config->CycleHosts)
1552                 this->WriteCommonExcept("QUIT :Changing hosts");
1553
1554         /* Fix by Om: User::dhost is 65 long, this was truncating some long hosts */
1555         strlcpy(this->dhost,shost,64);
1556
1557         this->InvalidateCache();
1558
1559         if (this->ServerInstance->Config->CycleHosts)
1560         {
1561                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1562                 {
1563                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1564                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1565                         if (n.length() > 0)
1566                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1567                 }
1568         }
1569
1570         if (IS_LOCAL(this))
1571                 this->WriteNumeric(396, "%s %s :is now your displayed host",this->nick,this->dhost);
1572
1573         return true;
1574 }
1575
1576 bool User::ChangeIdent(const char* newident)
1577 {
1578         if (!strcmp(newident, this->ident))
1579                 return true;
1580
1581         if (this->ServerInstance->Config->CycleHosts)
1582                 this->WriteCommonExcept("%s","QUIT :Changing ident");
1583
1584         strlcpy(this->ident, newident, IDENTMAX+1);
1585
1586         this->InvalidateCache();
1587
1588         if (this->ServerInstance->Config->CycleHosts)
1589         {
1590                 for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1591                 {
1592                         i->first->WriteAllExceptSender(this, false, 0, "JOIN %s", i->first->name);
1593                         std::string n = this->ServerInstance->Modes->ModeString(this, i->first);
1594                         if (n.length() > 0)
1595                                 i->first->WriteAllExceptSender(this, true, 0, "MODE %s +%s", i->first->name, n.c_str());
1596                 }
1597         }
1598
1599         return true;
1600 }
1601
1602 void User::SendAll(const char* command, const char* text, ...)
1603 {
1604         char textbuffer[MAXBUF];
1605         char formatbuffer[MAXBUF];
1606         va_list argsPtr;
1607
1608         va_start(argsPtr, text);
1609         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1610         va_end(argsPtr);
1611
1612         snprintf(formatbuffer,MAXBUF,":%s %s $* :%s", this->GetFullHost(), command, textbuffer);
1613         std::string fmt = formatbuffer;
1614
1615         for (std::vector<User*>::const_iterator i = ServerInstance->Users->local_users.begin(); i != ServerInstance->Users->local_users.end(); i++)
1616         {
1617                 (*i)->Write(fmt);
1618         }
1619 }
1620
1621
1622 std::string User::ChannelList(User* source)
1623 {
1624         std::string list;
1625
1626         for (UCListIter i = this->chans.begin(); i != this->chans.end(); i++)
1627         {
1628                 /* If the target is the same as the sender, let them see all their channels.
1629                  * If the channel is NOT private/secret OR the user shares a common channel
1630                  * If the user is an oper, and the <options:operspywhois> option is set.
1631                  */
1632                 if ((source == this) || (IS_OPER(source) && ServerInstance->Config->OperSpyWhois) || (((!i->first->IsModeSet('p')) && (!i->first->IsModeSet('s'))) || (i->first->HasUser(source))))
1633                 {
1634                         list.append(i->first->GetPrefixChar(this)).append(i->first->name).append(" ");
1635                 }
1636         }
1637
1638         return list;
1639 }
1640
1641 void User::SplitChanList(User* dest, const std::string &cl)
1642 {
1643         std::string line;
1644         std::ostringstream prefix;
1645         std::string::size_type start, pos, length;
1646
1647         prefix << this->nick << " " << dest->nick << " :";
1648         line = prefix.str();
1649         int namelen = strlen(ServerInstance->Config->ServerName) + 6;
1650
1651         for (start = 0; (pos = cl.find(' ', start)) != std::string::npos; start = pos+1)
1652         {
1653                 length = (pos == std::string::npos) ? cl.length() : pos;
1654
1655                 if (line.length() + namelen + length - start > 510)
1656                 {
1657                         ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1658                         line = prefix.str();
1659                 }
1660
1661                 if(pos == std::string::npos)
1662                 {
1663                         line.append(cl.substr(start, length - start));
1664                         break;
1665                 }
1666                 else
1667                 {
1668                         line.append(cl.substr(start, length - start + 1));
1669                 }
1670         }
1671
1672         if (line.length())
1673         {
1674                 ServerInstance->SendWhoisLine(this, dest, 319, "%s", line.c_str());
1675         }
1676 }
1677
1678 unsigned int User::GetMaxChans()
1679 {
1680         return this->MaxChans;
1681 }
1682
1683
1684 /*
1685  * Sets a user's connection class.
1686  * If the class name is provided, it will be used. Otherwise, the class will be guessed using host/ip/ident/etc.
1687  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1688  * then their ip will be taken as 'priority' anyway, so for example,
1689  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1690  */
1691 ConnectClass* User::SetClass(const std::string &explicit_name)
1692 {
1693         ConnectClass *found = NULL;
1694
1695         if (!IS_LOCAL(this))
1696                 return NULL;
1697
1698         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Setting connect class for UID %s", this->uuid);
1699
1700         if (!explicit_name.empty())
1701         {
1702                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1703                 {
1704                         ConnectClass* c = *i;
1705
1706                         if (c->GetDisabled())
1707                                 continue; // can't possibly match, removed from conf
1708
1709                         if (explicit_name == c->GetName())
1710                         {
1711                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Explicitly set to %s", explicit_name.c_str());
1712                                 found = c;
1713                         }
1714                 }
1715         }
1716         else
1717         {
1718                 for (ClassVector::iterator i = ServerInstance->Config->Classes.begin(); i != ServerInstance->Config->Classes.end(); i++)
1719                 {
1720                         ConnectClass* c = *i;
1721
1722                         if (c->GetType() == CC_ALLOW)
1723                         {
1724                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "ALLOW %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1725                         }
1726                         else
1727                         {
1728                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "DENY %s %d %s", c->GetHost().c_str(), c->GetPort(), c->GetName().c_str());
1729                         }
1730
1731                         /* check if host matches.. */
1732                         if (((!match(this->GetIPString(),c->GetHost(),true)) && (!match(this->host,c->GetHost()))))
1733                         {
1734                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "No host match (for %s)", c->GetHost().c_str());
1735                                 continue;
1736                         }
1737
1738                         /*
1739                          * deny change if change will take class over the limit check it HERE, not after we found a matching class,
1740                          * because we should attempt to find another class if this one doesn't match us. -- w00t
1741                          */
1742                         if (c->limit && (c->RefCount + 1 >= c->limit))
1743                         {
1744                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "OOPS: Connect class limit (%lu) hit, denying", c->limit);
1745                                 continue;
1746                         }
1747
1748                         /* if it's disabled, we can't match this one. */
1749                         if (c->GetDisabled())
1750                         {
1751                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Class disabled");
1752                                 continue;
1753                         }
1754
1755                         /* if it requires a port ... */
1756                         if (c->GetPort())
1757                         {
1758                                 ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Requires port (%d)", c->GetPort());
1759
1760                                 /* and our port doesn't match, fail. */
1761                                 if (this->GetPort() != c->GetPort())
1762                                 {
1763                                         ServerInstance->Logs->Log("CONNECTCLASS", DEBUG, "Port match failed (%d)", this->GetPort());
1764                                         continue;
1765                                 }
1766                         }
1767
1768                         /* we stop at the first class that meets ALL critera. */
1769                         found = c;
1770                         break;
1771                 }
1772         }
1773
1774         /*
1775          * Okay, assuming we found a class that matches.. switch us into that class, keeping refcounts up to date.
1776          */
1777         if (found)
1778         {
1779                 /* only fiddle with refcounts if they are already in a class .. */
1780                 if (this->MyClass)
1781                 {
1782                         if (found == this->MyClass) // no point changing this shit :P
1783                                 return this->MyClass;
1784                         this->MyClass->RefCount--;
1785                         ServerInstance->Logs->Log("USERS", DEBUG, "Untying user from connect class -- refcount: %lu", this->MyClass->RefCount);
1786                 }
1787
1788                 this->MyClass = found;
1789                 this->MyClass->RefCount++;
1790                 ServerInstance->Logs->Log("USERS", DEBUG, "User tied to new class -- connect refcount now: %lu", this->MyClass->RefCount);
1791         }
1792
1793         return this->MyClass;
1794 }
1795
1796 /* looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1797  * NOTE: If the <ALLOW> or <DENY> tag specifies an ip, and this user resolves,
1798  * then their ip will be taken as 'priority' anyway, so for example,
1799  * <connect allow="127.0.0.1"> will match joe!bloggs@localhost
1800  */
1801 ConnectClass* User::GetClass()
1802 {
1803         return this->MyClass;
1804 }
1805
1806 void User::PurgeEmptyChannels()
1807 {
1808         std::vector<Channel*> to_delete;
1809
1810         // firstly decrement the count on each channel
1811         for (UCListIter f = this->chans.begin(); f != this->chans.end(); f++)
1812         {
1813                 f->first->RemoveAllPrefixes(this);
1814                 if (f->first->DelUser(this) == 0)
1815                 {
1816                         /* No users left in here, mark it for deletion */
1817                         try
1818                         {
1819                                 to_delete.push_back(f->first);
1820                         }
1821                         catch (...)
1822                         {
1823                                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::PurgeEmptyChannels to_delete.push_back()");
1824                         }
1825                 }
1826         }
1827
1828         for (std::vector<Channel*>::iterator n = to_delete.begin(); n != to_delete.end(); n++)
1829         {
1830                 Channel* thischan = *n;
1831                 chan_hash::iterator i2 = ServerInstance->chanlist->find(thischan->name);
1832                 if (i2 != ServerInstance->chanlist->end())
1833                 {
1834                         FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(i2->second));
1835                         delete i2->second;
1836                         ServerInstance->chanlist->erase(i2);
1837                         this->chans.erase(*n);
1838                 }
1839         }
1840
1841         this->UnOper();
1842 }
1843
1844 void User::ShowMOTD()
1845 {
1846         if (!ServerInstance->Config->MOTD.size())
1847         {
1848                 this->WriteNumeric(422, "%s :Message of the day file is missing.",this->nick);
1849                 return;
1850         }
1851         this->WriteNumeric(375, "%s :%s message of the day", this->nick, ServerInstance->Config->ServerName);
1852
1853         for (file_cache::iterator i = ServerInstance->Config->MOTD.begin(); i != ServerInstance->Config->MOTD.end(); i++)
1854                 this->WriteNumeric(372, "%s :- %s",this->nick,i->c_str());
1855
1856         this->WriteNumeric(376, "%s :End of message of the day.", this->nick);
1857 }
1858
1859 void User::ShowRULES()
1860 {
1861         if (!ServerInstance->Config->RULES.size())
1862         {
1863                 this->WriteNumeric(434, "%s :RULES File is missing",this->nick);
1864                 return;
1865         }
1866
1867         this->WriteNumeric(308, "%s :- %s Server Rules -",this->nick,ServerInstance->Config->ServerName);
1868
1869         for (file_cache::iterator i = ServerInstance->Config->RULES.begin(); i != ServerInstance->Config->RULES.end(); i++)
1870                 this->WriteNumeric(232, "%s :- %s",this->nick,i->c_str());
1871
1872         this->WriteNumeric(309, "%s :End of RULES command.",this->nick);
1873 }
1874
1875 void User::HandleEvent(EventType et, int errornum)
1876 {
1877         if (this->quitting) // drop everything, user is due to be quit
1878                 return;
1879
1880         /* WARNING: May delete this user! */
1881         int thisfd = this->GetFd();
1882
1883         try
1884         {
1885                 switch (et)
1886                 {
1887                         case EVENT_READ:
1888                                 ServerInstance->ProcessUser(this);
1889                         break;
1890                         case EVENT_WRITE:
1891                                 this->FlushWriteBuf();
1892                         break;
1893                         case EVENT_ERROR:
1894                                 /** This should be safe, but dont DARE do anything after it -- Brain */
1895                                 this->SetWriteError(errornum ? strerror(errornum) : "EOF from client");
1896                         break;
1897                 }
1898         }
1899         catch (...)
1900         {
1901                 ServerInstance->Logs->Log("USERS", DEBUG,"Exception in User::HandleEvent intercepted");
1902         }
1903
1904         /* If the user has raised an error whilst being processed, quit them now we're safe to */
1905         if ((ServerInstance->SE->GetRef(thisfd) == this))
1906         {
1907                 if (!WriteError.empty())
1908                 {
1909                         ServerInstance->Users->QuitUser(this, GetWriteError());
1910                 }
1911         }
1912 }
1913
1914 void User::SetOperQuit(const std::string &oquit)
1915 {
1916         operquitmsg = oquit;
1917 }
1918
1919 const char* User::GetOperQuit()
1920 {
1921         return operquitmsg.c_str();
1922 }
1923
1924 void User::IncreasePenalty(int increase)
1925 {
1926         this->Penalty += increase;
1927 }
1928
1929 void User::DecreasePenalty(int decrease)
1930 {
1931         this->Penalty -= decrease;
1932 }
1933
1934 VisData::VisData()
1935 {
1936 }
1937
1938 VisData::~VisData()
1939 {
1940 }
1941
1942 bool VisData::VisibleTo(User* user)
1943 {
1944         return true;
1945 }
1946